Refactor solutions registration

Author: obalunenko

cmd/aoc-cli/main.go

@@ -12,7 +12,8 @@ import (
 	"github.com/pkg/errors"
 
 	"github.com/oleg-balunenko/advent-of-code/puzzles"
-	_ "github.com/oleg-balunenko/advent-of-code/puzzles/solutions/2019/day01"
+	// register all solutions
+	_ "github.com/oleg-balunenko/advent-of-code/puzzles/solutions"
 )
 
 const (

puzzles/solutions/name.go renamed to puzzles/name.go

@@ -1,4 +1,4 @@
-package solutions
+package puzzles
 
 import (
 	"errors"

puzzles/solutions/name_test.go renamed to puzzles/name_test.go

@@ -1,4 +1,4 @@
-package solutions
+package puzzles
 
 import (
 	"os"
@@ -12,6 +12,7 @@ func TestMakeName(t *testing.T) {
 		year   string
 		puzzle string
 	}
+
 	tests := []struct {
 		name    string
 		args    args
@@ -46,7 +47,10 @@ func TestMakeName(t *testing.T) {
 			wantErr: true,
 		},
 	}
+
 	for _, tt := range tests {
+		tt := tt
+
 		t.Run(tt.name, func(t *testing.T) {
 			got, err := MakeName(tt.args.year, tt.args.puzzle)
 			if tt.wantErr {

puzzles/solutions/2019/day01/solution.go

@@ -9,15 +9,14 @@ import (
 	"github.com/pkg/errors"
 
 	"github.com/oleg-balunenko/advent-of-code/puzzles"
-	"github.com/oleg-balunenko/advent-of-code/puzzles/solutions"
 )
 
 type solution struct {
 	name string
 }
 
 func init() {
-	puzzleName, err := solutions.MakeName("2019", "day01")
+	puzzleName, err := puzzles.MakeName("2019", "day01")
 	if err != nil {
 		panic(err)
 	}

puzzles/solutions/doc.go

@@ -1,6 +1,6 @@
-// Package declares common interface for puzzle solutions and functionality for register and run them.
+// Package solutions registers solutions of puzzles.
 //
-// Each solution should implement `Solver` interface, be implemented udnder separate package and contain `init()`
+// Each solution should implement `Solver` interface, be implemented under separate package and contain `init()`
 // function that will register that solution in list of all solvers.
 //
 // Example:
@@ -20,7 +20,11 @@
 // 	}
 //
 // Then to register solution in the list of all solutions: make a blank import of package with puzzle solution
-// at main.go
+// at register.go
 //
 // 	import  _ "github.com/oleg-balunenko/advent-of-code/puzzles/solutions/day01"
+//
+// And then blank import solutions package at main.go to register all solutions
+//
+//  import _ "github.com/oleg-balunenko/advent-of-code/puzzles/solutions
 package solutions

puzzles/solutions/register.go

@@ -0,0 +1,5 @@
+package solutions
+
+import (
+	_ "github.com/oleg-balunenko/advent-of-code/puzzles/solutions/2019/day01" // register day01 solution
+)

puzzles/solver.go

@@ -1,3 +1,4 @@
+// Package puzzles declares common interface for puzzle solutions and functionality for register and run them.
 package puzzles
 
 import (